Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Photocatalytic and photoelectrocatalytic properties of anodic titanium dioxide nanotubes based on anodizing conditions

양극산화 조건에 따른 이산화티타늄 나노튜브의 광촉매 및 광전기화학적 특성

  • Yeonjin Kim (Department of Chemistry and Chemical Engineering, Inha University) ;
  • Rin Jung (Department of Chemistry and Chemical Engineering, Inha University) ;
  • Jaewon Lee (Department of Chemistry and Chemical Engineering, Inha University) ;
  • JeongEun Yoo (Department of Chemistry and Chemical Engineering, Inha University) ;
  • Kiyoung Lee (Department of Chemistry and Chemical Engineering, Inha University)
  • 김연진 (인하대학교 화학.화학공학융합학과) ;
  • 정린 (인하대학교 화학.화학공학융합학과) ;
  • 이재원 (인하대학교 화학.화학공학융합학과) ;
  • 유정은 (인하대학교 화학.화학공학융합학과) ;
  • 이기영 (인하대학교 화학.화학공학융합학과)
  • Received : 2023.03.03
  • Accepted : 2023.03.29
  • Published : 2023.04.30
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Abstract

Nanosized TiO2 has been widely investigated in photoelectrochemical or photocatalytic applications due to their intrinsic properties such as suitable band position, high photocorrosion resistance, and surface area. In this study, to achieve the high efficiency in photoelectrochemical and photocatalytic performance, TiO2 nanotubular structures were formed by anodization at various temperatures and times. The morphological and crystal structure of the anodized TiO2 nanotubes (NTs) were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). The photoelectrochemical (PEC) properties and incident photon-to-current conversion efficiency (IPCE) of the TiO2 NTs were studied with different lengths and morphologies. From the detailed investigations, the optimum thickness of TiO2 nanotubes was 3 ㎛. Moreover, we found that the optimum photocatalytic pollutant removal efficiency of TiO2 nanotubes for photodegradation of Rhodamine B (RhB) under simulated solar light was 5.34 ㎛ of tube length.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2019R1l1A3A01041454).

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